This textbook chapter introduces the buffalo as a keystone species, and describes the environmental impacts of its near extinction, including today’s predominance of non-native species in the Great Plains. Human activities that contribute to...(View More) species extinction are addressed. Students graph historical sightings of buffalo, and calculate the number of buffalo killed for bone used in refining sugar and fertilizer and in the production of bone china. The resource includes a link to current news articles and a teacher's guide. This is the second chapter in the unit, Losing Biodiversity, examining the endangerment and extinction of entire species of plants and animals throughout the world due to human actions. The resource is part of Global System Science (GSS), an interdisciplinary course for high school students that emphasizes how scientists from a wide variety of fields work together to understand significant problems of global impact.(View Less)

Remote sensing, using Thermal Infrared Multispectral Scanner (TIMS) data, has lead to the discovery of previously unknown roads in the canyon area of New Mexico once occupied by the Anasazi culture. Students will use those images, along with maps...(View More) and photos, to observe the roads and surrounding area. Students will then compare the value of each media (image, map, photo) in uncovering and interpreting archeological information. Emphasis is placed on the map/image reading skills of direction and scale. The URL opens to the investigation directory, with links to teacher and student materials, lesson extensions, resources, teaching tips, and assessment strategies. This is Investigation 1 of three found in the Grades 5-8 Module 4 of Mission Geography. The Mission Geography curriculum integrates data and images from NASA missions with the National Geography Standards. Each of the three investigations in Module 4, while related, can be done independently.(View Less)